Fire-proof floor



(NO Model.)

W. W. HAZLETT.

PIRE PROOF FLOOR.

No. 326,735. Patented Sept. 22, 1885.

WITNESSESj 4 www4 ATTORNEYS.

N. PETERS. FhotLxmogrnpMr. Washington, D. C.

VILLIAM WV. HAZLETT, OF TORONTO, OHIO.

FIRE-PROOF FLOOR.

SPECIFICATION forming part of Letters Patent No. 326,735, dated September 22,1885.

Application lcd June 13, 1885. (No model.)

To aZZ whom, t may concern:

Be it known that I, VILLIAM NV. HAZLETT, of Toronto, in the county of Jefferson and State of Ohio, have invented certain new and useful improvements in Fire-Proof Floors, of which the following is a full, clear, and exact description.

My invention relates to iireprooffloors, and especially to a protection for the lower portions of the flanged iron beams of the iioors, and has for its object to improve the construcy tion of thc floors by providing` a better protection to the beams, and also to facilitate the setting of the tile arches between the beams.

The invention consists in certain novel constructions and combinations of parts of the beam protection, and its arrangement with the beams and the arch-tile of the floor, all as hereinafter fully described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in both the iigures.

Figure l is a perspective view of a portion 0f a lire-proof floor embodying` my improved system ot'protection to the iron beams; and Fig. 2 is an end view of one of the floor beams, the protecting-tiles at its lower edge, and the skewback tiles at each side of the beam.

The letter A indicates the iron -beams. B are the skew back tiles, laid next to and at opposite sides of the beams. O are the intermediate tiles, and D indicates the key-tile, the hollow tiles B C D together forming a dat arch between the beams A A, as shown in Fig. l. Cement may be filled in over the tiles and level with the tops of the beams.

The letters E E indicate cover plates or tiles made of refractory material, and placed directly on the opposite lower flanges, a a, of the bea-ms A, each tile E being formed with an npper portion, c, which rests on the flange a of the beam, and a side portion, e, which extends below the beam. The inner faces of the pendent portions c e of the flange cover tiles E E of each beam A are inclined downward toward each other, as at c, so as to form between them and the beam a dovetail-shaped recess, in which is placed the tile F, which is beveled at the edges to fit the inclined faces e2 of tiles E E, so as to be supported by said tiles at the lower edge or face of the beam. I make the tiles F concaved on their upper faces to form air-spacesf between the bodies of said tiles and the beams A, to give better protection to thebeamsfrom dames or heatbelow them than if these lower tiles laid dat against the beams. The skew-back tiles B are recessed at and along their lower outer portions to fit over the upper parts, e, and at the pendent side portions, e, of the flangeprotection tiles E, and the tiles B have inturned lip-portions Z), which fit below the undercut outer faces, e3, of the flange-cover tile E, to lock the latter in place. The faces of all the tiles B C D E F, where they join with each other, are corrugated, scratched, or roughened to give a better hold to the cement used in the joints, and the exposed lower faces of the tiles will also be roughened or corrugated to give abetter hold to the plaster finish.

It is evident that the beam-protection tiles E F may be xed to the beams, and will hold their places on the beam flanges a a by interlocking with each other, as above explained; hence these tiles E F may be put in place before the main tiles B O D of the floor-arch are set, which facilitates the setting' of the archtiles between the beams, and has advantages in this respect over a tile protection at the lower beam -flanges, which will not keep its place except as held to the flanges by the skewbaek tiles, as the hollow-tile arches are set bctween the beams.

I am aware that ceilings have been con structed of `III-iron beams having tiles provided with dovetailed recesses slid on the lower flanges of said irons. Skew-back tiles rested on said lower flanges and tiles, and intermediate inclined tiles, a keystone tile, and cement were used to complete the ceiling; also, that these tiles have been provided with roughened or corrugated surfaces; also, that the tile for the lower il ange ofthe iron has been formed in two sections having their inner sides recessed to receive the flange, and roughened on their under surfaces to better hold the plastering, and I do not claim such as of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is"

l. A protection for the lower parts of the iron beams ofre-proof floors, comprising4 op,-

posite tiles E E, having upper parts, e, over e', and the tiles F, supported below the beam by the parts e e of opposite tiles E E, and

said tiles- F having concavities in their npper faces, forming an air space, as at f, between them; and thebeam, substantially asi herein set forth,

3. Indire-proof floors,the combinationwitlr l beamshavingloweriianges and tile arches set betweenthebeams, of abeam-protection com prising ange-cover tiles E E, formed with'. Q upper parts, e e, pendentside parts, e e', and 2 tiles. F, supported below the beams by parts e e" ofV ti1es E^ substantially as herei'nset forth.

4. In fire-proof floors, the combination, with beams having lower flanges and tile arches set between the beams, of a beam-protectioncomprising iiange-cover tiles E, formed with upper parts, e, pendent side parts e', and tiles F, supported below the beams by parts e, of 3o tiles. E, andv said tiles F having concaved upper faces forming an air-space, as at f, be-

' low thebeams, substantially as herein set forth.

5. In fire-proof floors, the combination, with beams A A, having ianges a a, and the tile arch B G D, of the protection-tiles E E F and said arch-tiles B B, having lips b under the flange-eover tiles E E, substantially as herein set forth., l

WILLIAM W. HAZLETT.

Witnesses:`

JANs KEYS,

W. F. DWENNY. 

